JP4509652B2 - Demultiplexer for active antenna - Google Patents

Description

  The present invention relates to a branching device for an active antenna.

  Conventionally, there is a method of superimposing a power output on a high-frequency transmission cable as one method of supplying power to an active antenna incorporating an amplifier. However, a power inserter for superimposing the power output is required.

  FIG. 12 shows a conventional configuration diagram for connecting an active antenna to a television receiver.

  The power source for operating the amplifier of the active antenna (1) is from the DC plug (21a) of the AC adapter (21) via the DC jack (23a) of the power inserter (23) and via the high frequency transmission cable (5). The terrestrial TV signal is supplied to the output terminal (1a) of the active antenna (1) from the output terminal (1a) of the active antenna (1) via the high frequency transmission cable (5) and the power inserter (23). Then, it is further sent to the television receiver (2) via the high-frequency transmission cable (5).

  On the other hand, when a satellite broadcast mixing circuit is added to the active antenna, a duplexer for connecting to the satellite broadcast receiver (STB) is required. In this case, the satellite broadcast receiver (STB) It is possible to use the power supply output for the converter that is supplied via the demultiplexer.

  FIG. 13 shows a conventional configuration diagram for connecting an active antenna with a built-in satellite broadcast mixing circuit to a television receiver.

  The power supply for the converter of the satellite broadcast receiving antenna (4) is supplied from the satellite broadcast receiver (3) via the high frequency transmission cable (5), the duplexer (12), the active antenna (1), and the high frequency transmission cable (5). Then, the power supplied to the converter of the satellite broadcast receiving antenna (4) and operating the amplifier of the active antenna (1) is also supplied from the satellite broadcast receiver (3). The satellite broadcast signal is mixed with the terrestrial television signal in the satellite broadcast mixing circuit built in the active antenna (1), and is output from the output terminal (1a) of the active antenna (1) via the high-frequency transmission cable (5). It is sent to the input terminal (12a) of the demultiplexer (12), and is demultiplexed into a satellite broadcast signal and a terrestrial television signal in the demultiplexer (12), and is sent from the satellite broadcast output terminal (12b) to the high-frequency transmission cable (5 ) Is supplied to the satellite broadcast input terminal (3b) of the satellite broadcast receiver (3) and sent from the satellite broadcast receiver (3) to the television receiver (2). The terrestrial television signal is also transmitted from the terrestrial television output terminal (12c) of the duplexer (12) to the terrestrial television input terminal (3a) of the satellite broadcast receiver (3) via the high-frequency transmission cable (5). Then, it is sent from the satellite broadcast receiver (3) to the television receiver (2). The duplexer (12) constitutes an energization circuit capable of superimposing power between the input terminal (12a) and the satellite broadcast output terminal (12b).

  Thus, when the satellite broadcast mixing circuit is not added to the active antenna (1), or when the satellite broadcast reception antenna (4) is not used even if the satellite broadcast mixing circuit is provided, the separation is not possible. Since the waver (12) is not required, power is supplied using the power inserter (23) and the AC adapter (21). On the other hand, when a satellite broadcast mixing circuit is added in the active antenna (1) and the satellite broadcast receiving antenna (4) is connected, a duplexer as described in, for example, Japanese Patent Application Laid-Open No. 2000-32293 is provided. Since power is supplied using (12), the power inserter (23) and the AC adapter (21) are unnecessary.

  Since it is unclear in which environment the user will use the active antenna (1), the supplier of the active antenna (1) is used for the duplexer (12), the power inserter (23), and the AC adapter (21). All of them were economically lost due to the waste that had to be prepared.

JP 2000-32293 A

  An object of the present invention is to provide a demultiplexer for an active antenna that can be applied to an active antenna incorporating a satellite broadcast mixing circuit, can be used with a single high-frequency transmission cable, and can be supplied at low cost.

  In one mode of an active antenna demultiplexing device of the present invention, an input terminal, a terrestrial television output terminal, and a satellite broadcast output terminal each having one of an F-type plug and an F-type jack are provided. An active antenna duplexer having a current-carrying function between the broadcast output terminal and an AC adapter for the duplexer, the duplexer AC adapter having an F-type DC output terminal, and the F-type DC output terminal Is a shape connectable to the satellite broadcast output terminal.

  Further, it is desirable that the F-type DC output terminal incorporates a circuit that functions as a terminal when connected to the satellite broadcast output terminal of the duplexer.

  The duplexer includes a first erroneous connection prevention mechanism at the satellite broadcast output terminal, and the duplexer AC adapter includes an F-type plug and an F-type that do not include the first erroneous connection prevention mechanism. It is desirable that the F-type DC output terminal is provided with a second erroneous connection preventing mechanism so that it cannot be connected to one of the jacks and can be connected to the satellite broadcast output terminal.

  In a different aspect of the active antenna branching device of the present invention, an input terminal, a terrestrial television output terminal, and a satellite broadcast output terminal each having one of an F-type plug and an F-type jack are provided. It consists of a duplexer for an active antenna having an energizing function with a broadcast output terminal, an AC adapter having a DC plug, and an F-type DC jack conversion connector having a DC jack to which the DC plug can be connected. The F-type DC jack conversion connector includes an F-type terminal that is connectable to the satellite broadcast output terminal.

  Further, it is desirable that the F-type terminal incorporates a circuit that functions as a terminal when connected to the satellite broadcast output terminal of the duplexer.

  Further, the duplexer includes a first erroneous connection prevention mechanism at the satellite broadcast output terminal, and the F-type-DC jack conversion connector includes an F-type plug not provided with the first erroneous connection prevention mechanism, and It is desirable to provide the F-type terminal with a second erroneous connection prevention mechanism so that it cannot be connected to one of the F-type jacks and can be connected to the satellite broadcast output terminal.

  According to the present invention, conventionally, when a satellite broadcast receiving antenna is installed, an active antenna can be easily installed by using an existing high-frequency transmission cable.

  In addition, when an active antenna is used alone, a power inserter is not required, and it is possible to reduce the waste of equipment, and the supplier can reduce costs.

  Further, in this case, adding a termination circuit to the F-type DC output terminal of the AC adapter or adding a termination circuit to the F-type terminal of the F-type DC jack conversion connector affects the high-frequency characteristics of the duplexer. It became possible to supply power without giving it.

  FIG. 1 shows a configuration diagram in which an active antenna is connected to a television receiver using an embodiment of an active antenna demultiplexing device of the present invention.

  The power source required to operate the amplifier incorporated in the active antenna (1) is a branching filter (10) connected from an F-type DC output terminal (20a) which is an F-type plug shape of the AC adapter (20). ) Through the high-frequency transmission cable (5) via the satellite broadcast output terminal (10b) and the input terminal (10a) of the duplexer (10), and sent to the output terminal (1a) of the active antenna (1). The terrestrial television signal received and amplified by the active antenna (1) is input from the output terminal (1a) of the active antenna (1) through the high-frequency transmission cable (5) to the input terminal ( 10a) and the terrestrial television output terminal (10c) of the duplexer (10), and then sent to the television receiver (2) via the high-frequency transmission cable (5).

  As shown in the circuit diagram of FIG. 3, the active antenna (1) includes a satellite broadcast mixing circuit between the output terminal (1a) and the satellite broadcast input terminal (1b).

As shown in the perspective view of FIG. 4, the duplexer (10) has one of an F-type plug and an F-type jack that are F-type connectors, for example, an input terminal that is an F-type jack in the illustrated example. (10a), a terrestrial television output terminal (10c) and a satellite broadcast output terminal (10b). Between an input terminal and (10a) and the satellite output terminal (10b) is a circuit arrangement having a current supply function. The satellite broadcast output terminal (10b) includes, for example, a first erroneous connection prevention mechanism (10d) as illustrated. The erroneous connection preventing mechanism (10d) may be, for example, two grooves as illustrated.

  As shown in FIG. 5, the duplexer AC adapter (20) includes, for example, an F-type DC output terminal (20a) having an F-shaped plug shape in the illustrated example, and the F-type DC output terminal (20a) is It can be connected to the satellite broadcast output terminal (10b). That is, the F-type DC output terminal (20a) includes a second erroneous connection prevention mechanism (20b) corresponding to the first erroneous connection prevention mechanism (10d) provided in the satellite broadcast output terminal (10b). The second erroneous connection preventing mechanism (20b) may be, for example, a protrusion protruding from the insertion end as illustrated. Accordingly, the duplexer AC adapter (20) corresponds to the shape of the F-type DC output terminal (20a), but does not have a corresponding erroneous connection prevention mechanism. Although it cannot be connected to the shape (that is, the terrestrial television output terminal (10c) or the like), it can be connected to the satellite broadcast output terminal (10b).

  Further, as shown in the circuit diagram of the F-type DC output terminal (20a) in FIG. 6, a circuit that acts as a termination when connected to the duplexer (10) is incorporated in the F-type DC output terminal (20a). To do.

  By adding such a termination circuit, it is possible to supply power to the active antenna using the duplexer AC adapter (20) without affecting the high frequency characteristics of the duplexer (10). Become.

  FIG. 2 shows a configuration diagram in which satellite broadcasts are mixed and connected using the above-described embodiment of the active antenna demultiplexing device of the present invention.

  The converter power supply of the satellite broadcast receiving antenna (4) is supplied from the satellite broadcast receiver (3) to the high frequency transmission cable (5), the satellite broadcast output terminal (10b) of the duplexer (10), the input terminal (10a), and the high frequency. It is sent to the converter of the satellite broadcast receiving antenna (4) via the transmission cable (5), the output terminal (1a) of the active antenna (1) and the satellite broadcast input terminal (1b), and the amplifier of the active antenna (1) The power necessary to operate the TV is also supplied from the satellite broadcast receiver (3). The satellite broadcast signal is mixed with the terrestrial television signal by the satellite broadcast mixing circuit built in the active antenna (1), and is separated from the active antenna (1) through the high-frequency transmission cable (5). To a satellite broadcast signal and a terrestrial television signal at a demultiplexer (10), and from each output terminal (10b), (10c) of the demultiplexer (10). These are respectively supplied to the input terminals of the corresponding satellite broadcast receiver (3) via a high-frequency transmission cable and sent to the satellite broadcast receiver (3) and the television receiver (2).

  As shown in FIGS. 1 and 2, even when the terrestrial TV signal and the satellite broadcast signal are mixed and output by the satellite broadcast mixing circuit of the active antenna, only the terrestrial TV signal is received and output. However, when operating power is supplied to the amplifier of the active antenna, only the terrestrial television signal is received using the same duplexer, and only the terrestrial television signal is sent to the television receiver via the duplexer. In this case, it is not necessary to prepare a separate power inserter, and only a dedicated duplexer AC adapter may be used.

  FIG. 7 shows a duplexer different from FIG. 4 in a perspective view, and FIG. 8 shows a duplexer AC adapter different from FIG. 5 in a perspective view. In the illustrated duplexer (11), the terrestrial television output terminal (11c) and the satellite broadcast output terminal (11b) are each F-shaped plugs with cables, and the duplexer AC adapter (22) is F-shaped. The DC output terminal (22a) is the same as the duplexer (10) and the duplexer AC adapter (20) except that the DC output terminal (22a) has an F-shaped jack with cable. Thus, each terminal may be in the shape of one of an F-type plug and an F-type jack.

  FIG. 9 shows a configuration diagram in which an active antenna is connected to a television receiver using a different embodiment of the power supply apparatus for an active antenna of the present invention. 1 except that the duplexer AC adapter (21) and the F-type plug-DC jack conversion connector (30) are used instead of the duplexer AC adapter (20).

  As shown in the perspective view of FIG. 10 and the circuit diagram of FIG. 11, the F-type plug-DC jack conversion connector (30) is connected to the DC jack (21a) of the AC adapter (21) to which the DC plug (21a) can be connected. 30b) and an F-type terminal (30a) that is an F-type plug that can be connected to the satellite broadcast output terminal (10b). Further, a circuit that acts as a terminal when connected to the duplexer (10) is built in the F-type terminal (30a) as shown.

  As described above, according to the present invention, a power inserter is not necessary, it is possible to reduce the waste of equipment, the cost can be reduced in the supplier, and the usability is improved for the user.

It is a block diagram which connects an active antenna to a television receiver using one Example of the branching device for active antennas of this invention. It is a block diagram which mixes and connects satellite broadcasting using one Example of the branching device for active antennas of this invention. It is a circuit diagram which shows an example of the active antenna used in FIG. 1 and FIG. It is a perspective view which shows one Example of the splitter used in FIG. 1 and FIG. It is a perspective view which shows one Example of the AC adapter for duplexers used in FIG. 1 and FIG. FIG. 3 is a circuit diagram showing an embodiment of the duplexer AC adapter used in FIGS. 1 and 2. It is a perspective view which shows the Example from which the splitter of this invention differs. It is a perspective view which shows the Example from which the AC adapter for duplexers of this invention differs. It is a block diagram which connects an active antenna to a television receiver using one Example from which the separation apparatus for active antennas of this invention differs. It is a perspective view which shows one Example of the F form-DC jack conversion connector of this invention. It is a circuit diagram which shows one Example of the F form-DC jack conversion connector of this invention. It is a block diagram which connects an active antenna to a television receiver by a prior art. It is a block diagram which connects the active antenna with a built-in satellite broadcast mixing circuit to a television receiver by a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Active antenna 1a Output terminal 1b Satellite broadcast input terminal 2 Television receiver 3 Satellite broadcast receiver 3a Terrestrial television input terminal 3b Satellite broadcast input terminal 4 Satellite broadcast reception antenna 5 High frequency transmission cable 10, 11, 12 Divider 10a, 11a, 12a Input terminal 10b, 11b, 12b Satellite broadcast output terminal 10c, 11c, 12c Terrestrial television output terminal 10d, 11d Incorrect connection prevention mechanism 20, 21, 22 AC adapter 20a, 22a DC output terminal 20b, 22b Incorrect connection prevention Mechanism 21a DC plug 23 Power inserter 23a DC jack 30 F type-DC jack conversion connector 30a F type terminal 30b DC jack 30c Misconnection prevention mechanism

Claims (6)

For an active antenna having an input terminal, a terrestrial TV output terminal, and a satellite broadcast output terminal each having one of an F-type plug and an F-type jack, and having an energization function between the input terminal and the satellite broadcast output terminal A duplexer comprising a duplexer and a duplexer AC adapter, wherein the duplexer AC adapter includes an F-type DC output terminal, and the F-type DC output terminal is connected to the satellite broadcast output terminal A demultiplexer characterized by having a possible shape. 2. The demultiplexer according to claim 1, wherein the F-type DC output terminal incorporates a circuit that functions as a terminal when connected to the satellite broadcast output terminal of the demultiplexer. The duplexer includes a first erroneous connection prevention mechanism at the satellite broadcast output terminal, and the duplexer AC adapter includes an F-type plug and an F-type jack that do not include the first erroneous connection prevention mechanism. The F-type DC output terminal is provided with a second erroneous connection prevention mechanism so that it cannot be connected to one of the shapes and can be connected to the satellite broadcast output terminal. The demultiplexer according to 1 or 2. For an active antenna having an input terminal, a terrestrial TV output terminal, and a satellite broadcast output terminal each having one of an F-type plug and an F-type jack, and having an energization function between the input terminal and the satellite broadcast output terminal A duplexer comprising: a duplexer; an AC adapter having a DC plug; and an F-type DC jack conversion connector having a DC jack to which the DC plug can be connected. Comprises a F-shaped terminal that is connectable to the satellite broadcast output terminal. 5. The demultiplexer according to claim 4, wherein the F-type terminal incorporates a circuit that functions as a terminal when connected to the satellite broadcast output terminal of the demultiplexer. The duplexer includes a first erroneous connection prevention mechanism at the satellite broadcast output terminal, and the F-type DC jack conversion connector includes an F-type plug and an F-type that do not include the first erroneous connection prevention mechanism. The F-type terminal is provided with a second erroneous connection preventing mechanism so that it cannot be connected to one of the jacks and can be connected to the satellite broadcast output terminal. 4. A demultiplexer according to 4 or 5.

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